Home / 90,942.08-125,579.46-57,009.05

Finding the Fourth Proportional to 90,942.08, 125,579.46 and 57,009.05

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Solution

The fourth proportional to 90,942.08, 125,579.46 and 57,009.05 is: 78,722.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,942.08 : 125,579.46 = 57,009.05 : x
  2. Step 2: Convert to fraction form
    90,942.08/125,579.46 = 57,009.05/x
  3. Step 3: Cross multiply
    90,942.08x = 125,579.46 × 57,009.05
  4. Step 4: Simplify right side
    90,942.08x = 7,159,165,086.22
  5. Step 5: Solve for x
    x = 7,159,165,086.22/90,942.08
  6. Step 6: Final answer
    x = 78,722.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.